Genetic Variant TGIF1:c.16+10C>T (chr18-3450515-C-T) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_003244.4(TGIF1):c.16+10C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000558 in 1,560,502 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

TGIF1
NM_003244.4 intron

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: -0.0410

Publications

0 publications found

Variant links:

Genes affected

TGIF1 (HGNC:11776): (TGFB induced factor homeobox 1) The protein encoded by this gene is a member of the three-amino acid loop extension (TALE) superclass of atypical homeodomains. TALE homeobox proteins are highly conserved transcription regulators. This particular homeodomain binds to a previously characterized retinoid X receptor responsive element from the cellular retinol-binding protein II promoter. In addition to its role in inhibiting 9-cis-retinoic acid-dependent RXR alpha transcription activation of the retinoic acid responsive element, the protein is an active transcriptional co-repressor of SMAD2 and may participate in the transmission of nuclear signals during development and in the adult. Mutations in this gene are associated with holoprosencephaly type 4, which is a structural anomaly of the brain. Alternative splicing has been observed at this locus and multiple splice variants encoding distinct isoforms are described. [provided by RefSeq, Jul 2013]

TGIF1 Gene-Disease associations (from GenCC):

holoprosencephaly 4
Inheritance: AD Classification: DEFINITIVE, STRONG, LIMITED Submitted by: PanelApp Australia, Laboratory for Molecular Medicine, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)

TGIF1 links:

ENSG00000302876 (HGNC:):

ENSG00000302876 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.81).

BP6

Variant 18-3450515-C-T is Benign according to our data. Variant chr18-3450515-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1595745.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 6 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003244.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
TGIF1	NM_003244.4	MANE Select	c.16+10C>T	intron	N/A	NP_003235.1	Q15583-2
TGIF1	NM_173207.4		c.58+2718C>T	intron	N/A	NP_775299.1	Q15583-3
TGIF1	NM_001278682.2		c.25+859C>T	intron	N/A	NP_001265611.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
TGIF1	ENST00000343820.10	TSL:1 MANE Select	c.16+10C>T	intron	N/A	ENSP00000339631.6	Q15583-2
TGIF1	ENST00000618001.4	TSL:2	c.58+2718C>T	intron	N/A	ENSP00000483499.1	Q15583-3
TGIF1	ENST00000407501.6	TSL:3	c.16+10C>T	intron	N/A	ENSP00000384133.2	Q15583-2

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000490

AC:

AN:

163428

AF XY:

0.0000343

show subpopulations

Gnomad AFR exome

AF:

0.000113

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000109

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000575

AC:

AN:

1408286

Hom.:

Cov.:

AF XY:

0.0000561

AC XY:

AN XY:

695644

show subpopulations

African (AFR)

AF:

0.0000313

AC:

AN:

31988

American (AMR)

AF:

0.0000272

AC:

AN:

36826

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25256

East Asian (EAS)

AF:

0.00

AC:

AN:

36460

South Asian (SAS)

AF:

0.00

AC:

AN:

79844

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49216

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5620

European-Non Finnish (NFE)

AF:

0.0000710

AC:

AN:

1084732

Other (OTH)

AF:

0.0000343

AC:

AN:

58344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000333

Hom.:

Bravo

AF:

0.0000529

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Holoprosencephaly 4 (1)

TGIF1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.81

CADD

Benign

(source)

DANN

Benign

0.76

PhyloP100

-0.041

PromoterAI

-0.016

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over